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RESEARCH PRODUCT
A Rayleigh-Ritz approach for postbuckling analysis of variable angle tow composite stiffened panels
Alberto MilazzoVincenzo Oliverisubject
Rayleigh–Ritz methodEngineeringSource codemedia_common.quotation_subjectComposite numberStructure (category theory)02 engineering and technologyPhysics::Fluid Dynamics0203 mechanical engineeringGeneral Materials ScienceBoundary value problemSettore ING-IND/04 - Costruzioni E Strutture AerospazialiVariable angle tow composites Composite stiffened plates Postbuckling analysis Rayleigh-Ritz method First Order Shear DeformationLegendre polynomialsCivil and Structural Engineeringmedia_commonbusiness.industryMechanical EngineeringStructural engineering021001 nanoscience & nanotechnologyFinite element methodComputer Science Applications020303 mechanical engineering & transportsModeling and SimulationOrthogonal polynomials0210 nano-technologybusinessdescription
Abstract A Rayleigh-Ritz solution approach for generally restrained multilayered variable angle tow stiffened plates in postbuckling regime is presented. The plate model is based on the first order shear deformation theory and accounts for geometrical nonlinearity through the von Karman’s assumptions. Stiffened plates are modelled as assembly of plate-like elements and penalty techniques are used to join the elements in the assembled structure and to apply the kinematical boundary conditions. General symmetric and unsymmetric stacking sequences are considered and Legendre orthogonal polynomials are employed to build the trial functions. A computer code was developed to implement the proposed approach and to establish its applicability and its features for investigating variable angle tow structures. The proposed solution is validated by comparison with literature and finite elements results. Original results are presented for postbuckling of variable angle tow stiffened plates showing the potentialities of the method.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2018-02-01 | Computers & Structures |